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BF994S Datasheet(PDF) 4 Page - Vishay Siliconix

Part No. BF994S
Description  N-Channel Dual Gate MOS-Fieldeffect Tetrode, Depletion Mode
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Maker  VISHAY [Vishay Siliconix]
Homepage  http://www.vishay.com
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BF994S Datasheet(HTML) 4 Page - Vishay Siliconix

   
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BF994S
Vishay Telefunken
www.vishay.de
• FaxBack +1-408-970-5600
Rev. 3, 20-Jan-99
4 (7)
Document Number 85008
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
2
4
6
8
1012 141618 20
VDS – Drain Source Voltage ( V )
12856
VG2S=4V
f=1MHz
Figure 7. Output Capacitance vs. Drain Source Voltage
–60
–50
–40
–30
–20
–10
0
10
–2.0 –1.5 –1.0 –0.5 0.0
0.5
1.0
1.5
2.0
VG1S – Gate 1 Source Voltage ( V )
12855
4V
0
2V
1V
3V
f= 200MHz
–0.2V
VG2S=–1V
–0.8V
–0.6V
–0.4V
Figure 8. Transducer Gain vs. Gate 1 Source Voltage
0
2
4
6
8
10
12
14
16
18
20
02468
10
12
14
16
18
ID – Drain Current ( mA )
12850
VDS=15V
f=1MHz
4V
2V
3V
1V
0.5V
VG2S=0
Figure 9. Forward Transadmittance vs. Drain Current
0
2
4
6
8
10
12
0
0.5
1.0
1.5
2.0
2.5
3.0
Re (y11) ( mS )
12860
VDS=15V
VG2S=4V
ID=10mA
f=50...700MHz
f=700MHz
600MHz
500MHz
400MHz
300MHz
200MHz
50MHz
Figure 10. Short Circuit Input Admittance
–20
–16
–12
–8
–4
0
0
2
4
6
8
1012 1416 1820 22
Re (y21) ( mS )
12861
VDS=15V
VG2S=4V
f=50...700MHz
f=50MHz
500MHz
300MHz
150MHz
700MHz
ID=5mA
10mA
20mA
Figure 11. Short Circuit Forward Transfer Admittance
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
0.4
0.8
1.2
1.6
2.0
Re (y22) ( mS )
12862
VDS=15V
VG2S=4V
ID=10mA
f=50...700MHz
f=700MHz
600MHz
500MHz
400MHz
300MHz
200MHz
50MHz
Figure 12. Short Circuit Output Admittance


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